Correct the comment for the priority of options and environments on o…

…tlptracegrpc (open-telemetry#5508)

part of open-telemetry#5379

---------

Co-authored-by: David Ashpole <dashpole@google.com>
Co-authored-by: Chester Cheung <cheung.zhy.csu@gmail.com>
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>

CHANGELOG.md

@@ -44,6 +44,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - Fix stale timestamps reported by the lastvalue aggregation. (#5517)
 - Run the `Detect` method in `go.opentelemetry.io/otel/sdk/resource` in parallel. (#5402)
 - Fix panic in baggage creation when a member contains 0x80 char in key or value. (#5494)
+- Correct comments for the priority of the `WithEndpoint` and `WithEndpointURL` options and their coresponding environment variables in  in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc`. (#5508)
 
 ## [1.27.0/0.49.0/0.3.0] 2024-05-21